AAVSO Home



Welcome, Guest. You are not logged in.
Log in
    Revise    New Search
Latest Details
Log in to retrieve additional aliases from SIMBAD.
Name
  WZ Sge  
AAVSO UID
000-BCK-656 (105771 observations)  
Constellation
Sagitta Sequence
J2000.0
20 07 36.50 +17 42 14.7  (301.90210 +17.70409) Search nearby
B1950.0 20 05 20.86 +17 33 29.3
Galactic coord. 57.537 -7.930
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
1RXS J200736.4+174217 1SXPS J200736.7+174215 2E 2005.3+1733
2E 4322 2MASS J20073649+1742147 2RXP J200736.6+174218
2RXS J200736.5+174219 3XMM J200736.5+174213 AAVSO 2003+17
CMC15 J200736.5+174214 Downes WZ Sge EGGR 136
GALEX J200736.6+174214 GSC2.3 N1US062532 HV 3518
Lanning 50 N Sge 1913 Nova Sge 1913
UCAC4 539-122231 URAT1 539-535296 USNO-B1.0 1077-0629939
WDS 20076+1741B WISE J200736.55+174215.1 XMMOM J200736.5+174215
(Not logged in)  Add name
Variability type
UGWZ+E+ZZ
Spectral type DAep(UG)
Mag. range
7 - 15.53 B
Discoverer Joanna Crighton Stevens Mackie
Epoch
13 Aug 2002 (HJD 2452500.0549) Ephemeris
Outburst --
Period 0.056687846 d  (81.630498 min)
Rise/eclipse dur. --
Remarks
Some references may be clicked to view in new window. Roll over index number to view submission details.
1 GCVS Team Nova Sge 1913, 1946, 1978. VB A (B 15.76m B, 7", 280deg). Really it is not a nova. Three outbursts were registered up to day: JD2420094, 32001, 43844 [I.Patterson, J.T.McGrow, L.Coleman, J.L.Africano, ApJ 248, 1067, 1981., J.A.Mattei, JRAS Can 74, N1, 53, 1980.]. There are superhumps on the light curve during the outburst with 0.057250d >= P >= 0.05714d (A=0.3m V) [I.Patterson, J.T.McGrow, L.Coleman, J.L.Africano, ApJ 248, 1067, 1981., D.Targan, IBVS N1539, 1979.]. There are light variations between the outbursts (A = 0.14m - 0.3m). During some of light weakenings Algol-like eclipses are observed (A = 0.2m) with the elements: Min I = 2437547.72845 + 0.0566878455d*E [E.L.Robinson, R.E.Nather, J.Patterson, ApJ 219, 168, 1978.]; D = 0.04P. d = 0.02P. There are also rapid light oscillations (A <= 0.01m). The periods of these oscillations before the 1978 outburst were 28.98s and 27.87s [E.L.Robinson, R.E.Nather, J.Patterson, ApJ 219, 168, 1978.], but after this outburst - 28.95963s [J.Middleditch, J.Nelson, BAAS 11, N4, 664, 1979.]. According to [J.Patterson, ApJ 241, 235, 1980.], in 1976 - 78 these oscillations were represented by the elements: Max = 2443311.790250 + 0.00032254826d*E + 9.8d*10**(-16)*E**2.
(Not logged in)  Add remark
References
Click reference title/citation to view in new window. Roll over index number to view submission details.
1 Gaia Collaboration; et al., 2018, Gaia Data Release 2. Summary of the
contents and survey properties		 2018A&A...616A...1G
2 Bob Nelson's O-C files, 2016 --
3 T. Kato et al., 2009, arXiv:0905.1757v1 [astro-ph.SR] 2009arXiv0905.1757K
4 R.A. Downes et al., 2001, PASP 113, 764 (2006 archival version) 2005JAD....11....2D
5 J.M. Kreiner, 2004, Acta Astronomica 54, 207 2004AcA....54..207K
6 R.A. Downes et al., 2001, PASP 113, 764 2001PASP..113..764D
7 G.Williams, ApJ Suppl 53, N3, 523, 1983. 1983ApJS...53..523W
8 M.F.Walker, M.Bell, ApJ 237, 89, 1980. 1980ApJ...237...89W
External Links
Links open in a new window. Not all links may be valid for this particular target.
Location    Go   
Select a Location for more details.
Catalog Data
Information from selected catalogs obtained by cross-matching to 2 arc seconds using the CDS X-Match Service. These data may not be complete.
2MASS J = 14.86H = 14.56K = 14.00J - K = 0.86
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Image not downloaded. Click Retrieve Image to download and view. Retrieve image
Supporting Documents
There are currently no supporting documents on file for this star. (Not logged in)  Add document
Campaigns/Programs
 Legacy CVs
 BAA VSS Recurrent Objects Programme
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
7 Otero, Sebastian Alberto 2020-05-15 00:48 UTC Gaia DR2 position.
6 Schmeer, Patrick 2018-03-29 11:57 UTC UCAC4 position. Discoverer's first names added.
5 Admin, VSX 2010-01-05 04:43 UTC Position updated from the GCVS version of November 2009.
4 Admin, VSX 2009-10-30 01:32 UTC Update from [2004AcA....54..207K].
3 Admin, VSX 2009-05-14 00:48 UTC Update from [2009arXiv0905.1757K].
2 Admin, VSX 2007-03-23 19:52 UTC Discoverer added.
1 Admin, VSX 2005-12-18 01:33 UTC Initial database population.

Guidelines    FAQ    Manual    Forum    Variability Types    Passbands    Copyright    Acknowledgments    Privacy    Contact    Help us   
The International Variable Star Index
© 2005-2025 American Association of Variable Star Observers (AAVSO)
Version 1.1 [C]
172.30.5.23